Return-Path: <linux-kernel-owner+w=401wt.eu-S1758731AbYFJFDk@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1758731AbYFJFDk (ORCPT <rfc822;w@1wt.eu>);
	Tue, 10 Jun 2008 01:03:40 -0400
Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751507AbYFJFDd
	(ORCPT <rfc822;linux-kernel-outgoing>);
	Tue, 10 Jun 2008 01:03:33 -0400
Received: from smtp1.linux-foundation.org ([140.211.169.13]:58647 "EHLO
	smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK)
	by vger.kernel.org with ESMTP id S1751450AbYFJFDc (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Tue, 10 Jun 2008 01:03:32 -0400
Date: Mon, 9 Jun 2008 22:01:49 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Cc: balbir@linux.vnet.ibm.com, linux-kernel@vger.kernel.org,
       linux-mm@kvack.org,
       Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Subject: Re: 2.6.26-rc5-mm1
Message-Id: <20080609220149.d930d141.akpm@linux-foundation.org>
In-Reply-To: <200806100657.02863.m.kozlowski@tuxland.pl>
References: <20080609053908.8021a635.akpm@linux-foundation.org>
	<200806092114.54467.m.kozlowski@tuxland.pl>
	<20080609144834.c6fcb625.akpm@linux-foundation.org>
	<200806100657.02863.m.kozlowski@tuxland.pl>
X-Mailer: Sylpheed 2.4.8 (GTK+ 2.12.5; x86_64-redhat-linux-gnu)
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 3163
Lines: 82

On Tue, 10 Jun 2008 06:57:02 +0200 Mariusz Kozlowski <m.kozlowski@tuxland.pl> wrote:

> Witam, 
> 
> > On Mon, 9 Jun 2008 21:14:54 +0200
> > Mariusz Kozlowski <m.kozlowski@tuxland.pl> wrote:
> > 
> > > Hello Balbir,
> > > 
> > > > Andrew Morton wrote:
> > > > > Temporarily at
> > > > > 
> > > > >   http://userweb.kernel.org/~akpm/2.6.26-rc5-mm1/
> > > > > 
> > > > 
> > > > I've hit a segfault, the last few lines on my console are
> > > > 
> > > > 
> > > > Testing -fstack-protector-all feature
> > > > registered taskstats version 1
> > > > debug: unmapping init memory ffffffff80c03000..ffffffff80dd8000
> > > > init[1]: segfault at 7fff701fe880 ip 7fff701fee5e sp 7fff7006e6d0 error 7
> > > > 
> > > > With absolutely no stack trace. I'll dig deeper.
> > > 
> > > Hey, I see something similar and I actually have a stack trace. Here it goes:
> > > 
> > > bash[498] segfault at ffffffff80868b58 ip ffffffffff600412 sp 7fffa3d010f0 error 7
> > > init[1] segfault at ffffffff80868b58 ip ffffffffff600412 sp 7fff9e97f640 error 7
> > > init[1] segfault at ffffffff80868b58 ip ffffffffff600412 sp 7fff9e97eed0 error 7
> > > Kernel panic - not syncing: Attemted to kill init!
> > > Pid 1, comm: init Not tainted 2.6.26-rc5-mm1 #1
> > > 
> > > Call Trace:
> > > [<ffffffff80254632>] panic+0xe2/0x260
> > > [<ffffffff802fa8ba>] ? __slab_free+0x10a/0x630
> > > [<ffffffff80265a8e>] ? __sigqueue_free+0x5e/0x70
> > > [<ffffffff802851eb>] ? trace_hardirqs_off+0x1b/0x30
> > > [<ffffffff802851eb>] ? trace_hardirqs_off+0x1b/0x30
> > > [<ffffffff80259b54>] do_exit+0xb84/0xc30
> > > [<ffffffff80259c5a>] do_group_exit+0x5a/0x110
> > > [<ffffffff8026a3b5>] get_signal_to_deliver+0x2c5/0x620
> > > [<ffffffff8020bb3b>] do_notify_resume+0x11b/0xd10
> > > [<ffffffff8028da5b>] ? trace_hardirqs_on+0x1b/0x30
> > > [<ffffffff805cd0f3>] ? _spin_unlock_irqrestore+0x93/0x130
> > > [<ffffffff8026865c>] ? force_sig_info+0x10c/0x130
> > > [<ffffffff8022fb9c>] ? force_sig_info_fault+0x2c/0x40
> > > [<ffffffff802dd7dd>] ? print_vma_addr+0x10d/0x1d0
> > > [<ffffffff805cbb67>] ? trace_hardirqs_on_thunk+0x3a/0x3f
> > > [<ffffffff8028d8da>] ? trace_hardirqs_on_caller+0x15a/0x2c0
> > > [<ffffffff8020d4c9>] retint_signal+0x46/0x8d
> > > 
> > > This was copied manually so typos are possible.
> > > 
> > 
> > Thanks.  Could someone send a config please?  Or a bisection result ;)
> 
> In my case it turns out to be gcov patches - in which I'm interested
> in to see (and play with) the tests coverage.
> 
> #
> # gcov
> #
> kernel-call-constructors.patch
> kernel-introduce-gcc_version_lower-macro.patch
> seq_file-add-function-to-write-binary-data.patch
> GOOD
> gcov-add-gcov-profiling-infrastructure.patch
> GOOD
> gcov-create-links-to-gcda-files-in-build-directory.patch
> gcov-architecture-specific-compile-flag-adjustments.patch
> BAD
> 
> I can not bisect between the last two due to build error. Config is attached.
> 

(cc Peter)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/